108 BIRDS OF THE REPUBLIC OF PANAMA PART 4 



Mali, at 1460 m (6 km west of the summit), on the base of Tacarcuna. 



The birds of the Darien mountains differ only slightly from those of 

 Chiriqui in size, and in darker coloration on the upper surface and sides. 



The race festinus was described from a single adult male, collected 

 by E. A. Goldman in the forest near the head of Rio Limon. It is still 

 the only specimen known from Cerro Pirre. From June 4 to 9, 1963, 

 Galindo secured 2 males and a female in the forest adjacent to his camp 

 near the summit of Cerro Mali, on the side of Cerro Tacarcuna. 



The 3 birds from the Tacarcuna massif are slightly darker on the 

 back and crown of the head than the single male from Pirre; with more 

 material they may prove to be subspecifically distinct. From the few 

 now available it is noted that the slight differences seen are, in the main, 

 equivalent to the individual variation noted in an extensive series of the 

 race ligea from Chiriqui. 



TROGLODYTES BROWNI BROWNI Bangs: Timberline Wren, 

 Cucarachero de Volcan 



Troglodytes browni Bangs, Proc. New England Zool. Club, vol. 3, January 30, 

 1902, p. 53. (3000 m elevation, Volcan de Chiriqui.) 



Small, short-tailed; reddish brown above, paler on flanks and under- 

 tail coverts; with a prominent white superciliary, and a brown line (in 

 color like the crown) through the eye. 



Description. — Length 95-100 mm. Adult (sexes alike), above some- 

 what dull reddish brown, slightly darker on crown, brighter on rump; a 

 prominent white superciliary line, and a brown line (like crown) 

 through eye; wings and tail dusky, barred with reddish brown; lesser 

 wing coverts flecked with white; outer primaries edged with white; 

 sides of neck dull white edged with dusky brown; undersurface chin to 

 abdomen, dull white edged faintly with dusky; flanks and undertail 

 coverts dull russet-brown, the undercoverts flecked with white; edge of 

 wing and underwing coverts dull white. 



Immature, superciliary dull white; feathers of undersurface mar- 

 gined with dusky; white markings on primaries more extensive. 



Measurements. — Males (8 from Chiriqui), wing 48.8-53.1 (51.3), 

 tail 28.9-33.2 (31.5), oilmen from base 14.1-16.0 (15.0), tarsus 21.9- 

 25.7 (23.6) mm. 



Females (8 from Chiriqui), wing 47.6-54.1 (50.3), tail 28.4-32.2 

 (30.3), oilmen from base 14.0-16.1 (14.8, average of 7), tarsus 21.8- 

 24.0 (22.4) mm. 



Resident. Common near timberline across the summit of Volcan de 



